IIRC, cpu_reboot() will only reboot if the system has been fully
initialized.  Otherwise, it just halts.  

On Sat, 3 Oct 1998, John Kohl wrote:

> I'm trying to debug some hangs (file system locking problems, and/or
> disk/controller problems).
> 
> I used to be able to force a crash dump by dropping into ddb and typing
> db> call cpu_reboot(0x100)
> but all this does is reset the machine now (no dump!).
> 
> Help?  I can't debug this thing in ddb, my sources are on the same
> machine!  I just want a crash dump to examine.
> 
> -- 
> ==John Kohl <jtk@kolvir.arlington.ma.us>, <john_kohl@alum.mit.edu>
> Write a poem, share your heart!
> Home page: <URL:http://people.ne.mediaone.net/jtk/>
> Note new home zip code as of July 1, 1998: 02476
> 

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